Slab for building constructions



July 24, 1923.

C. Yw. scHALI.

SLAB FOR BUILDING CONSTRUCTIONS Filed July 15. 1922 CHALL HIS ATTYS.

'INVENTOR clLlN'roN w.

Patented duly 2d, 1923..

1 @MENTON W. BALL, 03E' CGLUMBU, @Ella @LAE FR BUILDER@ CONSTRUCTENS.

application tiled July 1E, 1922. Serial No. 575,142.

To aZZ whom it may camera.'

Be it known that I, CLINTON W. SCHALL, a citizen of the United States,residing at Columbus in the county of Franklin and State of Chio, haveinvented a certain new and useful improvement in Slabs for BuildingConstructions, of which the following is a specification.

The primary object of this invention 1s to provide slabs for use inerecting lhouses and other structures that may be economically andexpeditiously manufactured and erected without the aid of highly skilledlabor. @ther objects will appear from the disclosure herein.`

The invention is embodied in the example of slab and art ofmanufacturing the same herein shown and described, the features ofnovelty being :finally claimed.

In the accompanying drawing- Figure 1 is a transverse central sectionalview of the partly formed slab taken horizontally with reference to itsposition when finally erected in a building.

F ig. 2 is a similar view showing the slab completed or ready forjoining with other similar slabs.

Fig. 3 shows in horizontal section how the slabs are joined to form astraight wall and a corner.

F ig. 4C shows in horizontal section the joint between two slabs as itiinally appears or with the form boards removed from the joint.

The slabs are preferably formed in squares or oblongs of any suitablesize. In the views 5 designates a rectangular sheet of what is calledexpanded sheet metal or lath having a large mesh, say one and one fourthinches. This sheet is laid on -a boa-rd 26 and upon the center of sheet5 is placed a sheet metal spool 6. Wires, as shown at 8, are secured tothe lower sheet at its center and sides, said wires to be bent down attheir upper ends to secure the upper sheet to the lower sheet ashereinafter described. Placed near the two ends of the to-be verticalmargins of the sheet are strips of plaster of Paris 9 and parallelingthese are placed curved wooden form strips l0. Before laying the sheet 5on the board its opposite edges are slightly bent up as indicated at 5a.Thus prepared the spool 6 and the spaces between the strips 9 and 10 arefilled with concrete and the sheet metal 5 covered with a layer ofsuitable thickness, say one half inch, of concrete or plaster as shownat 11. When the concrete thus referred to has sufliciently set the formstrips 10 are removed and upon the filled spool and filled ends isplaced another sheet of expanded metal 12 of the same size and form asthat first referred to, two of its edges being bent down as shown at 12aand the upper ends of the wires 8 passed through the sheet and bent downas indicated in Fig. 2. The sheets 5 and 12 because of their locationmay be termed face sheets. Through the open ends of the structure thusformed are passed several horses 13 and upon these horses are supportedform boards 1a. These boards 14: are preferably located so as to allowsome of the concrete to pass through the mesh of the sheet and thus formon the inner side a layer 15, the application of the concrete beingcontinued to form To hold the wet concrete and prevent it from runningover the edges and also for providing a measure to x the thickness ofthe outer layer 16 boards 17 are located around all the edges of thesheet 12. lin practice and preparatory to applying the concrete to thesheet 12 an open rectangular frame comprising form boards 17 may beplaced around the partly formed slab, the

edges 5El and 12a being bent in to permit this. When the layers ofconcrete 15 and 16 have hardened t e slab is removed from the frame 17and the horses 13 and boards 14 taken out of the open ends of the slab.

Tn erecting a wall the slabs thus formed are placed edge to edge asshown in Fig. 3the lips 5 and 12a being bent out and inter-connected atseveral points by wires 18. The vertical openings between the thusconnected slabs are then closed at opposite faces of the wall by formboards 19 and the pocket thus formed filled with concrete pouredI intothe upper end of the pocket. When the concrete thus poured h-ardens andthe form boards 19 removed a wall having a joint like that shown in Fig. 4 is presented. lt will be noted that because the sheet 5` was laidon a board the plaster or cement l1 passes through the mesh of themetallic sheet and spreads upon the board so that upon hardening itforms a smooth an outer layer 16.,

coat or surface as though regularly lastered. A White coat can be addedi desiredwhen the wall is erected.

As depictedI in Fi 3 the slabs as rst described are admirab y ada ted toform corners. In constructing suc corners I form with a suitable mold anangular piece 21 having 'a m'etallic core 22. The two Webs of thisangular piece are joined at intervals with metallic'straps 23. A cornerpiece thus formed is placed to lap on the ends of the two slabs meetingat a corner, as shown in Fig. 3, the edges 5? andi 12a being first wiredtogether as indicated Vin said vlew. When the corner piece is thusapplied a pocket is formed into the yupper end of which the concrete canbe poured and when such concrete sets and hardens the meeting edges ofthe slabs and the corner piece are all bound tightly together by a solidcore of concrete. It will be noted that the curved form of the core inthe straight Wall forms a key that locks the adjacent slabs from lateralmovement with reference to each other, either inward or outward. Thewall can be erected in courses of these slabs either with alinin orbroken joints vertically. It is-preferable to erect them with verticallyalining joints because such construction lessens multiplication of sizesandi continuous vertical air spaces are provided, thus promotin coolnessin summer, warmth in winter an freedom from dampness at all times.

In erecting a building with these slabs due provision will, of course,be made for leaving suitable openings for the installation of door andwindow frames of metal or wood, such frames being preferably soconstructed as to aid in tying together the adjacent slabs in fixedrelation to each other and the wall as a whole.

1,4an,ees

The forms of ,the parts can be changed without departing from the gistof the 1nvention as claimed.

What I claim is:

V1. A wall constructed of hollow slabs laced edge to edge said slabseach consistlng of two paralleliy spaced face sheets of foraminate metaladapted to receive, be penetrated b and retain a plastic material, coatsof p astic material applied to and covering said sheets except at thevertical margins thereof, and reinforced Vertical spacing fillings ofplastic material between and connecting said face sheets within themargins thereof, and plastic fillings between said slabs covering theaforesaid margins. 2. A hollow slab for constructing buildingsconsisting of two parallelly spaced face sheets of foraminate sheetmetal adapted to receive, be penetrated by and retain a plasticmaterial, coats of plastic material applied to and covering said sheetsexcept at the vertical margins thereof and reinforced vertical spacingfillings of plastid material between and connecting said face sheetsbetween the margins thereof, said margins being adapted to be bentinward'to engage a plastic filling between the adjacent edges of two ofsuch slabs.

3. A hollow slab for constructing buildings consisting of two parallellyspacedI face sheets of foraminate sheet metal adapted to receive, bepenetrated by and retain a plastic material, plastic material applied toand covering said sheets except at margins thereof and spacing andbracing posts of plastic material connecting said facing sheets at theinterior of the slab, said posts having a reinforcing member connectingthe foraminate sheets.

CLINTON W. SCHALL.

